Apparatus for joining the webs of paper rolls



Dec. 19, 1944. P. DlETRlCH I 2,365,529

APPARATUS FOR JOINING THE WEBS OF PAPER ROLLS Filed May 24, 1940Patented Dec. 19, 1944 2,365,529 APPARATUS FOR JOINING THE wEBs OF PAPERROLLS Paul Dietrich, Augsburg, Germany; vested in the Alien PropertyCustodian Application May 24, 1940, Serial No. 337,038

In Germany June 24, 1939 4 Claims.

This .invention relates to a device for joining paper rolls by stickinga new roll to a runningdown web, the new roll, disposed in a rotaryframe, being brought up to the speed of the runhing-down web and, byturning the frame, into a position ot which the stickin operation isperformed. This is done by means of a pressure applying brush at the endof a lever actuated by a piston or pistons which are moved by pneumaticor hydraulic pressure controlled by an electromagnetically operatedpiston slide-valve or a valve system.

The present invention constitutes an improvement of a device of the typeoutlined above and takes into consideration that when the runningdownroll is swung out of operating and into sticking position for the newroll the brush must be moved out of the range of the running-downsticking. Such an arrangement is suitable also because it reducesfluttering of the running web and thereby insures sticking.

In a known construction of this class the cylinder for actuating thlever for the brush is fixed to the machine frame. To bring about the toand fro motion of the brush preceding the sticking operation the shaftfor the lever is moved separately with the result that the piston,particularly during application of the brush to the running-clownwemisdisplaced to such an extent that an empty space is produced on one sideliquid during the subsequent actuation of the sticking means.Experiments have shown, however, that this involves a loss of time greatenough to prevent operation of the stickin means at the requisite speed.

According to the present inVention these drawbacks are eliminated bymounting the cylinder on an arm that is movable about the shaft for 'thelever supporting the brush. At the actuation of this aim, the motionthereof will be transmitted through the piston, piston rod and lever tothe shaft for the latter andthe brush applied to the web withoutrelative displaceof the piston and had to be filled with air or ment ofthe piston and cylinder and without the formation of a dead space.

In a particularly simple constructional embodiment of the inventiononly-a single cylinder hav- "ing a piston working against spring actionis used.

The movable arm on which the cylinder is mounted may be actuated atwill, preferably by means of a pawl-operated handwheel and eccentric.

The invention is illustrated by way of example in the accompanyingdrawing, in which Fig. 1 is an elevation of a three-roll reel inassociation with an improved apparatus for joining the webs of therespective rolls; v

Fig. 2 is an enlarged detail view similar to the right-hand portion ofFig. l and taken along line 2-2 in Fig. 3, the supporting frame structurbeing omitted;

Fig. 3 is a sectional detail view looking at the left-hand portion ofFig. 2; a i

Fig. 4 is a detail view showing the pawl for controlling the position ofthe handwheel and eccentric.

Referring to the drawing, the three-roll star 2 is rotatably mounted inthe bearings of floor stand I. One leg of star 2 carries the runningdownroll 3, from which a web 4 or paper or the like is unwound duringoperation. When the web 4 has become substantially exhausted from roll3, the .present invention is employed for sticking or adhesivelysecuring the exhausting web to a new roll 5, said roll 5 being mountedupon another leg of star 2.,

In Fig. 1, the web on the running-down roll 3 has almost becomeexhausted, and is positioned so that the web, of the succeeding roll 5may be adhesively secured to the exhausting web. The roll 3, when full,previously occupied the position now occupied by roll 5, in Fig. 1.During the unwinding of roll 3, however, the reel 2 was rotated in a.clockwise manner through an angle of 120 to the position shown, thusmoving the periphery of the full roll 5 beneath band drive and also intoclose proximity to the web 4 extending from roll 3. A brush 8 isemployed for adhesively securing the exhausting web 4 to the web of newroll 5, and a knife I8 is employed for severing the runing-down web.

The apparatus for producing the above-mentioned splicing operation isnot a part of the present invention; however, a full explanation of sucha device is given in my copending application, Serial No. 319,192, filedFebruary 16, 1940.

As heretofore stated, it is not only necessary to move the brush 6 outof range of the runningdown roll as said roll passes from upperoperating position to the lower position shown (Fig. 3), but it is alsonecessary to produce this brush movement without affecting thesensitivity of the brush operating means.

per web to a new roll 01' paper, in combination, a rotary carrier forthe running down mil and w the new roll, operable to bring the new rollto Referring to Figs. 1 to 4 inclusive, the invenltl loosely rockableabout the shaft 9 and moved. by a lever I02 eccentrically connected atI" with a handwheel Illl controllable by a pawl'ItIa, whichrpawlyieldingly engages ratchet lllib. By turning the handwheel I03, the armIIII and ing any variation in the position oi. the piston II in thecylinder I". Thus, the lever I and brush 8 can be readily swung awayfrom or towards the path of travel oi the web to permit rotation of therotary frame and permit the brush to be brought quite close to the webso that it can be instantly operated by the fluid pressure piston whenpasting is to take place under automatic control at the proper instant.As the automatic control of the brush is eflected by an electricallycontrolled fluid pressure piston and cylinder construction, the pastingtakes pressure to said cylinder to operate the piston,

a movable armcarrying said cylinder, and means for operating said arm towithdraw or advance the sticking member relative to the rotary carrier.a

2. In a device for sticking a running down pathereby the shaft 9 areadjusted 'without causposition for sticking, a pressure applyingsticking member, a pivoted lever carrying said member, a fluid pressurecylinder having a piston connected to said lever for swinging the leverabout its pivot axis, means for supplying fluid pressure to saidcylinder to operate the piston,

a movable arm carrying said cylinder and having a pivotal supportcoaxial with the pivot axis.

oi. said lever, and means for operating said arm to withdraw or advancethe sticking member relative to the rotary carrier.

3. In a device for sticking a running down paper web. to a new roll ofpaper, in combination, a rotary carrier for the running down roll andthe new roll, operable to bring the. new roll to position for sticking,a pressure applyingsticking member, a lever carrying said member andhaving a fixed fulcrum axis, a fluid pressure cylinder having a pistonoperable therein and connected to said lever to swing the lever aboutits flxed'axis, means for supplying fluid pressure '30 place without jaror shock and with a very ac-- to said, cylinder. to operate the piston,a movable arm carrying said cylinder and pivotally movable about saidfixed axis, and means for operating said arm to withdraw or advance thesticking member relative to the rotary carrier.

4. In a device for sticking a running down paper web to a newroll ofpaper, in combination, a rotary carrier for the running down roll andthe new roll, operable to bring the new roll to position for sticking, apressure applying sticking member, a pivoted lever carrying said member,a fluid pressure cylinder having a piston connected to said lever forswinging the lever about its pivot axis, means for supplying fluid.pressure to said cylinder to operate the piston,

a movable arm carrying said cylinder and having a pivotal supportcoaxial with the pivot axis of said lever, a hand wheel, an eccentricoperated by said hand wheel, and an eccentric crank operated by saideccentric and connected to said armfor swinging the arm on its pivotalsup- Port.

PAUL DIE'I'RICH.

